AFAICT the only difference between the Sunrise's Restorations and Vanguard lines is different tilt latch hardware. They both have the fiberglass reinforcement, foam fill, same extrusions, same interior/exterior finishes, etc. I had the Restorations installed in my home a couple weeks ago and I like them. They're a very nice-looking window, and the narrow rails on the sashes give you more glass area.
I looked at the RbA but basically laughed the salesman out of the house when he quoted me a price of over $2000/window.
I believe there's a pro on the board who services your area and can show you some other products. Use the "request a quote" feature?